Apparatus for charging blast-furnaces



(No Model.)

L. BURT. Apparatus for Charging Blast Furnaces.

No. 239,223. Patented March 22,1881.

MPETBisfPI-IDTWLITNOGRA FHER, WASHINGTON, D. C.

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wrrnn STATES PATENT QFFICEO LEE BURT, OF DETROIT, MICHIGAN.

APPARATUS FOR CHARGING BLAST-FURNACES.

SPECIFICATION forming part of Letters Patent No. 239,223, dated March 221881.

Application filed December 30, 1880. (No model.)

To all whom it may concern Be it known that I, LEE BURT, of Detroit, inthe county of WVayne and State of Michigan have invented a new anduseful Improvement in Apparatus for Charging Blast-Furnaces, of whichthe following is aspecification.

The drawing represents a vertical sectional view of the chargingapparatus constructed according to my invention.

My invention relates to apparatus for charging blast-furnaces; and itconsists in hanging the bell at the top of a blast-furnace from thebell-beam by rods which pass through the covering-plate of the top ofthe furnace outside of the aperture in the covering-plate through whichthe furnace is charged, so as to leave said aperture entirelyunobstructed when the furnace is being charged, and in covering saidaperture with a hinged or otherwise removable solid lid.

In the charging apparatus now used the bell is connected with thebell-beam by a rod runnin g from the end of the bell-beam directly tothe apex of the bell, passing through the center of the lid which coversthe charging-aperture, and this lid, when raised, slides on the rodwhich supports the bell. This rod, runnin g through the center of thecharging-aperture, renders it impossible to use a chargingbuggy whichruns directly over the bell and dumps its load evenly all around thebell, and necessitates the use of a charging-buggy which dumps its loadfrom the side of the chargingaperture, and also prevents the use of asolid gas-tight lid for covering the charging-aper- These defects areobviated by my. in vention, which is constructed as follows:

I I are sections of the upper end of the walls of a blast-furnace, thetop of which is covered by an iron covering-plate, A, having a circularaperture over the center of the furnace.

B B are iron brackets supported by covering-plate A.

E is an iron hopper, bolted at its upper end to brackets B, and carryingat its lower end a lip-ring, D, against which the bell closes.

F is a bellof the usual form and construction.

N is a bell-beam, which may be counterbalanced and operated in anysuitable manner, supported on column 0.

M is a chain fastened to the end of hellbearn N.

K is a cross-bar, to the center of which is fastened chain M, and to itsends are fastened the vertical iron rods L L.

G is a cross-bar, to the center of which is fastened the upperend of avertical rod, H, the lower end of rod H being secured to the apex ofhell F. The lower ends of rods L L are fastened to the ends of cross-barGr, so that cross-bars K and G, with rods L L, form a frame or sash, andby raising or lowering crossbar K bell F will be raised or lowered. RodsL L pass through coveringplate A outside of the charging-aperture.

It is obvious that cross-bar G and connecting-rod H may be'dispensedwith and rods L L attached directly to bell F without departing from myinvention.

G is a solid lid, which covers the chargingaperture in covering-plate A.It is hinged at J, and is counterbalanced by aweight attached to chainT, passing over pulley I.

Sis a curved trackfor the weight to run upon, and is curved as shown inthe drawing, so that as lid 0 rises and offers less resistance to theweight the track will offer an increasing support to the weight andprevent lid 0 from being thrown open with a violent jerk.

It is the mixture of ore and fuel with which the furnace is to becharged.

When it is necessary to charge the furnace lid 0 is raised, leaving thecharging-aperture entirely clear and unobstructed, so that abellbottomedcharging-buggy can be run directly over the aperture and its load dumpedupon the bell, thus securing an even distribution of the charge aroundhell I*. Hinged lid 0 is then closed, which prevents any escape of gaswhen bell F is lowered, and the charge is then put into the furnace bylowering bell F.

It will be seen that by the use of my invention the charging-buggy canbe run directly over the charging-aperture and its load distributedevenly around the bell, and the escape of gas when the bell is loweredalmost entirely prevented.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. In a blast-furnace, the combination of a covering-plate having acharging-aperture, a

bell-supportingbeam arranged below the charging aperture,a bell-supportarranged above the.

- ing-bell and extending through the coveringplate outside thecharging-aperture, and a bell-supporting beam connected with theprojecting ends of the vertical rods, all' substan- I 5 tially as andfor the purpose described.

3. In a blast-furnace, the combination of the covering-plate A, havingan aperture therein directly over the apex of the bell, solid lid (3,bell F, bell-beam N, and frame K L G, con- 20 nected with the bell-beamabove and the bell below, substantially as herein shown and described.

LEE BURT. Witnesses:

GEORGE H. CARLISLE, WM. G. FORREST.

